Your first signature
Import a certificate, drop a PDF, place the signature and download the signed document.
This walkthrough takes a fresh installation to its first signed PDF. You need a digital certificate as a PKCS#12 file (.p12 or .pfx) and its password. The interface is in Spanish, so the labels below are quoted as they appear.
1. Import a certificate
Open Certificados (/certificates) and choose Importar certificado. Drop the .p12 or .pfx file (at most 100 KiB), type its password and, optionally, give it a name; by default it takes the holder’s common name.
The certificate is checked with that password and stored encrypted. The password itself is not kept unless you tick Recordar contraseña, in which case it is stored encrypted too and signing no longer asks for it. The list shows each certificate’s holder, tax id, issuer and how long it remains valid.
2. Drop a PDF
The home page (/) is a drop zone: drop a PDF on it (at most 20 MiB, not password-protected) and it opens in the viewer, ready to sign. The file is added to your library as version 1. You can also upload into a folder from Documentos (/documents).
3. Place the signature and sign
In the viewer, pick the certificate you will sign with, then choose the kind of signature:
- Visible: drag a rectangle on the page where the stamp should go. Stamp Esta página only, or Todas the pages at the same position.
- Invisible: the signature is embedded in the file with no stamp on the page.
Add an optional Motivo (reason) and Lugar (place), enter the certificate password if it is not remembered, and sign.
The signature is a PAdES baseline signature (ETSI.CAdES.detached, SHA-256) that embeds the issuer chain, so validators can build the certificate path. If the deployment sets a time-stamping authority (TSA_URL), it also carries a timestamp that proves when it was signed (B-T), and the history and the traces show it.
4. Download and keep track
Every signature creates a new version of the document; earlier versions stay available under Versiones and each one can be downloaded. The viewer lists who signed with which certificate, and Trazas (/traces) keeps every signature next to every other action on documents and certificates (imports, uploads, merges, page edits, downloads, renames, moves and deletions), filterable by type, certificate, name and dates.
Sign again with another certificate and the new signature is added on top of the previous ones, in a new version.
Organize the library
Documentos (/documents) holds every PDF with its thumbnail. Put them in nested folders (each with its own icon), add colored tags, pin the ones you use often, and search or filter across the whole library. Select several documents to move or tag them at once, or drag them onto a folder.